Earth

Minerals in Formation of Earth Minerals are the materials that make up the rocks of the Earth’s crust. Some portion of this is formed by…

Soil formation process: Generally soil is formed by stone, stone chips, dust particles, sands, mud etc. Remains of plants and animals are also mixed with…

Crust is the outermost layer of a planet. The upper portion of lithosphere is known as earth-crust. The crust of the Earth is composed of…

Plate Tectonic Theory: The basic conception of this theory is based on the finding that the lithosphere below the earth is separated into many portions…

Internal Formation of the Earth The interior of the earth is divided into three layers. Below the earth’s surface lies the solid layer covering the…

Identify of the Sun, Earth and Moon You have known that our sun is one of the stars of the Milky Way galaxy. The solar…

Applications of surface tension (i) During stormy weather, oil is poured into the sea around the ship. As the surface tension of oil is less…

Impurities present in a liquid appreciably affect surface tension. A highly soluble substance like salt increases the surface tension whereas sparingly soluble substances like soap…

If the free surface of a liquid is plane, then the surface tension acts horizontally (Fig. a). It has no component perpendicular to the horizontal…

Molecular Theory of Surface Tension: Consider two molecules P and Q as shown in Figure. Taking them as centers and molecular range as radius, a…